Waterborne acrylic anticorrosive coating containing asphalt and preparation method thereof

A water-based acrylic and anti-corrosion coating technology, applied in anti-corrosion coatings, asphalt coatings, coatings, etc., can solve the problems of poor sealing and water resistance of acrylic emulsions, inability to meet the needs of actual thick coating applications, and poor aging resistance of asphalt coatings. The effect of avoiding hot dripping and cold brittleness, good strength and improving anti-corrosion performance

Inactive Publication Date: 2018-12-21
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing water-based acrylic anti-corrosion coatings in China use acrylic emulsion as the film-forming substance, supplemented by a large amount of anti-rust pigments as pigments and fillers. However, due to the poor sealing and water resistance of acrylic emulsions, the overall cost of water-based acrylic coatings is high but the anti-corrosion performance is not ideal. , oil-based asphalt has good sealing properties and low cost, and is widely used in the field of anti-corrosion. However, asphalt coatings have defects such as hot flow, cold brittleness, poor aging resistance, and soft paint film at high temperatures.
[0004] For example, the Chinese patent with the publication number CN106752642A discloses a water-based asphalt anti-corrosion coating and its preparation method. The vertical flow thickness of each embodiment of the patent is less than 500 μm, which cannot meet the actual application requirements of thick coating.
Another example is that the Chinese patent with the publication number CN103820024A discloses a water-based anti-corrosion and waterproof underframe coating and a production method. The method requires emulsified asphalt, water-based epoxy resin and other raw materials to be mixed uniformly, stored for 48 hours, and modified asphalt epoxy copolymer resin is obtained. Then carry out subsequent production steps, the production process is more time-consuming and the steps are more complicated

Method used

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  • Waterborne acrylic anticorrosive coating containing asphalt and preparation method thereof
  • Waterborne acrylic anticorrosive coating containing asphalt and preparation method thereof
  • Waterborne acrylic anticorrosive coating containing asphalt and preparation method thereof

Examples

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preparation example Construction

[0038] The present invention also provides a kind of preparation method of the water-based acrylic anticorrosion coating that contains asphalt as mentioned above, comprises the steps:

[0039] The steps of preparing the mixed slurry: take the water-based acrylic resin of the formula amount, put it in the disperser and stir it, then add the wetting agent, dispersant, filler, pH regulator, defoamer in sequence, and adjust the viscosity of the slurry with an appropriate amount of water , stir under medium and high speed conditions, disperse for 40-60 minutes, and prepare mixed slurry;

[0040] Steps of adding emulsified asphalt: measure the fineness of the above-mentioned mixed slurry, when the fineness of the mixed slurry is ≤60 μm, stir at a medium and low speed, and add emulsified asphalt, film-forming aids, and antifungal agents to the above-mentioned mixed slurry in sequence , Thickener; Stir evenly, place and mature for 30-60min, filter through a 100-mesh filter, discharge,...

Embodiment 1-3

[0043] Weigh the raw materials according to the proportioning in Table 1 respectively, and prepare the product according to the steps in Examples 1-3, see Table 1 for details:

[0044] Table 1: Raw material ratio table of embodiment 1-3

[0045]

[0046]

Embodiment 1

[0048] Example 1: Take 38 parts of HG-54C, stir at a uniform speed of 400r / min in a disperser, add 0.2 parts of Surfynol-104, 0.1 parts of BYK-154, 0.4 parts of Foamex 840, 20 parts of ground calcium carbonate powder, and 6 parts of talc Powder, 0.05 parts of ammonia water, stirred at 800r / min for about 45min to prepare a mixed slurry, measure the fineness of the above-mentioned semi-finished product, when the fineness of the semi-finished product is ≤ 60μm, keep stirring at 400r / min; 30 parts of emulsified asphalt produced by Hangzhou Rich New Material Co., Ltd., 2 parts of propylene glycol butyl ether, 0.5 parts of Nordes C15, 0.4 parts of RM-8W, and 0.2 parts of RM-12W were added in sequence. Stir evenly, place and mature for 45 minutes, filter through a 100-mesh filter, discharge, and pack.

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Abstract

The invention discloses waterborne acrylic anticorrosive coating containing asphalt and a preparation method thereof. The waterborne acrylic anticorrosive coating containing the asphalt is prepared from the following components in parts by weight: 0 to 10 parts of de-ionized water, 0.1 to 0.5 part of a wetting agent, 0.1 to 0.5 part of a dispersant, 0.3 to 1 part of a de-foaming agent, 30 to 50 parts of waterborne acrylic resin, 20 to 40 parts of filling, 0.02 to 0.5 part of a pH (Potential of Hydrogen) regulator, 0.1 to 1 part of a mildew preventive, 10 to 40 parts of emulsified asphalt, 2 to5 parts of a film-forming auxiliary agent and 0.3 to 1 part of a thickening agent. The waterborne acrylic anticorrosive coating disclosed by the invention takes the waterborne acrylic resin as a mainfilm-forming substance and the waterborne acrylic resin is matched with the emulsified asphalt and the functional auxiliary agent to carry out reasonable formula designing, and then the environment-friendly and efficient anticorrosive coating is prepared. The anticorrosive performance of the anticorrosive coating is as good as that of a traditional solvent type asphalt anticorrosive coating product; other performance indexes reach national or industrial standards.

Description

technical field [0001] The invention relates to a paint technology, in particular to an asphalt-containing water-based acrylic anticorrosion paint and a preparation method thereof. Background technique [0002] Acrylic resin systems are currently one of the most widely used coating systems in the world. Asphalt has excellent sealing properties and is widely used for anti-corrosion protection of metal products. [0003] The existing water-based acrylic anti-corrosion coatings in China use acrylic emulsion as the film-forming substance, supplemented by a large amount of anti-rust pigments as pigments and fillers. However, due to the poor sealing and water resistance of acrylic emulsions, the overall cost of water-based acrylic coatings is high but the anti-corrosion performance is not ideal. , oil-based asphalt has good sealing properties and low cost, and is widely used in the field of anti-corrosion. However, asphalt coatings have defects such as hot flow and brittleness, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D133/00C09D195/00C09D5/08C09D7/61
CPCC08K2003/265C09D5/08C09D125/14C09D195/00C09D7/61C08L95/00C08K3/26C08K3/34C08K3/36C08L33/04
Inventor 彭亮周达朗
Owner GUANGZHOU JOINTAS CHEM
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